Hi, I recently purchased a Grundfos CM3-5PM1 pump from online store, successfully install it..its working..
but produce quite loud sound and vibration (even louder than my previous 1HP Tsunami pump).
The pump was installed inside the roof, on top of plywood platform layered with rubber pad (free gift) in between.

Currently Im in the process of registering the ewarranty at www.grundfos-ewarranty.com.my
but havent completed yet due to missing invoice.

1. Am I correct to assume the pump is genuine if the warranty registration is accepted?
2. Is there any other way I could verified that my pump is genuine not an imitation?

Just to provide an update, i did manage to get copy of invoice from the online store
and the e-warranty registration is successful. So I guess its a genuine product.

Now, I just need to figure out what is causing the loud vibration.
My suspect.. it could be because of my attic wooden frame structure causing
the vibration from the pump to be amplified.

Does anyone have suggestion, how to improve the setup?


Turn On the sound: